One of the technical step was implementing basic level of conversation assignment algorithm in a peer code session, the other one was implementing a mini version of intercom (they called it minicom), and there was also a system design interview, for which I designed the data structure for some Intercom features like notifications, etc.
Explain how React hooks work
Describe Lambda functions in python.
What communication protocols are you familiar with?
At your current company, what processor & ICs (for sensors) are you using?
Focus on core java - Really Important. Deep implementation on Data structures like questions can be How does search implemented in Array list ? and how is it difference with regards to HashMap ? Why interfaces are created when you have abstract concepts ? ? Few basic questions on polymorphism, perhaps a quick review on OOP concepts would do. Questions on all kinds of indexing algorithms & Cache related questions Reasons of introducing new features from java version to version ( 8, 11, 17, 21 )
Why would you choose BigDecimal over double?
SQL: How do you perform table joins in SQL? Apache Spark: What is an RDD? How can you optimize queries? What strategies can you use to minimize data shuffling?
What are your weaknesses.
There was nothing difficult about the interview or the process.
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